| 基于损伤理论的隧道围岩松动圈确定方法 |
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| 引用本文： | 李政林,吴瑞祥,李龙剑,王晓艳.基于损伤理论的隧道围岩松动圈确定方法[J].地下空间与工程学报,2011,7(6):1060-1064,1090. |
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| 作者姓名： | 李政林 吴瑞祥 李龙剑 王晓艳 |
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| 作者单位： | 1. 同济大学土木工程学院地下建筑与工程系,上海,200092
2. 河北省交通规划设计院,石家庄,050011 |
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| 基金项目： | 长江学者和创新团队发展计划资助(IRT1029) |
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| 摘 要： | 针对岩体的应变软化特性,基于双线性损伤模型和应力等效原理,推导了卸荷围岩应力状态的损伤理论解析解,进而分析了隧道开挖后围岩应力随径向距离的分布特点,从而将卸荷后的围岩分为四个区域,即完全损伤区、非完全损伤区、弹性区和原岩应力区.根据围岩的实际破坏特点,采用两种不同的方法对完全损伤区的应力解进行了修正.通过对隧道围岩应力...
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| 关 键 词： | 松动圈 损伤模型 估算预测 应力分布 |
Method for Defining the Loose Zone of Tunnel Surrounding Rock Based on Damage Theory |
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| Li Zhenglin,Wu Ruixiang,Li Longjian,Wang Xiaoyan.Method for Defining the Loose Zone of Tunnel Surrounding Rock Based on Damage Theory[J].Chinese Journal of Underground Space and Engineering,2011,7(6):1060-1064,1090. |
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| Authors: | Li Zhenglin Wu Ruixiang Li Longjian Wang Xiaoyan |
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| Affiliation: | Li Zhenglin1,Wu Ruixiang 2,Li Longjian1,Wang Xiaoyan1(1.Department of Geotechnical Engineering,Tongji University,Shanghai 200092,China,2.Hebei Provincial Communications Planning and Design Institute,Shijiazhuang 050011,China) |
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| Abstract: | Considering the strain softening characteristic of rock mass,stress analytical solutions of unloading rock are derived based on bilinear damage model and stress equivalence principle,and the stress distribution character of the surrounding rock after excavation is analyzed,thus the unloading rock is divided into four zones,namely complete damage zone,incomplete damage zone,elastic zone and original stress zone.According to the failure characteristics of surrounding rock in reality,two completely different m... |
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| Keywords: | loose zone damage model estimation and prediction stress distribution |
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